Electrotherapeutic apparatus



J. H. EASTMAN.. ELECTROTHERAPEUTIC APPARATUS.

APPLICATION FILED MAY 5; 1919. '1 3 1 7, 278 Patented Sept. 30, 1919.

2 SHEETS-SHEET J. H. EASTMAN.

ELECTROTHERAPEUTIC APPARATUS.

APPLICATION FILED MAY 5.1919.

Patented Se t. 30, 1919.

2 SHEETS-SHEET 2- THE COLUMBIA PLANOGRAPH co., WASHINGTON. n. c

JAMESH. EASTMAN, 0F DETROIT, moment.

ELEGTBOTHERAPEUTIG APPARATUS.

Specification of Letters Patent. Patented Sept. 30 1919.

Application filed Ma}; 5,1919. Serial No. 294,906.

To all whom it may concerar Be .it known that 1; JAMES EASTMAN,

a citizen of the United ,States."residing. at

Detroit. in the county of Wayne and ,State of Michigan, have invented certain new and useful Improvements in ,Electrotherapeut c Apparatus, of whichthe following is as'pec1- fication. I u j This invention relates to electrotherap'eutic apparatus or what. is quitecommonly called a violet rayf-highdrequencyigenerat'or. .It has for its object. an electrode holder and handle so designed; and the apparatus so designed; that the latter maybe entirely contained in the formerfresulting in a very convenient device thatcanbe made at minimum cost. Heretofore ithasbeen customary to have a handle that contains' the high-frequency coil. or. resonator;and the rest of the apparatus has been usually placed in a. portable box}.

It is the object of the present inventionjto so arrange the, parts Withoutcurtailingtheir size that they may all be containedwithin a single handle and the handle itself in no way impaired but rather .improved from the standpoint of manipulation and porta-- bility.. In the drawingsv Figure 1 is a cross section through my improved machine.

Fig. 2 is a longitudinalsection lofthe casing section that forms the electrode-holding tube. Fig. 3 is a crosssection through both sections on the line 3-.3 of Fig, 7 h I Fig. 4 is a diagrammatic View of the apparatus.

Fig. 5 is a perspective of the assembled casing.

Fig- 6" is a side elevation of the section forming the auxiliary tube. j I

Fig. 7 's an end elevation of the same.

a designates the cable that in the usual machine now on the market leads from a box containing the condense r, magnet coil, and the vibrator to the handle. Here the cable contains wires which can lead directly to a plug (not shown) that may be screwed into any electric light socket. The casing is made up of two sections forming in the aggregate two tubes connected by a pair of joining tubes 12, 7). One tube is partially closed at one end. This end has a central bore'carry'ing the electrode socket (Z which is in the form of a. splittu-be adapted to grasp the glass vacuum electrode f. y g

By comparing Figs. 5 and 6, an idea of how the casing is split can be bad. There are two tubes formed. the tube g, which we will call the.electrode holding tube, and the tube h, which We willcall the auxiliary tube. Fig. 2 shows the section which forms onehalf of the auxiliary tube and one-half of eachjofthe joining'tubes b fandthe whole of the electrode-holding tube. This is] the lower section shown in Fig. 5, while the upper section shown in Fig. and shown alone inFigs. 6. and ,7 comprisesone-halfof the auxiliary tube, one-half of the joining tubes 1) and the entire cap y. These sections maybe joined by screws 2' that pass through the screw holes a Itwill readily be understood howv this opens up the entire interior for assembling the apparatus itself and having access thereto.

This apparatus comprises a magnet coil Z provided with an armature carried upon a spring arm m;,which forms a vibrator to make and break the current'for the purpose of giving a pulsating current of high voltage that inay be transformed, into. an induced. current of muchhigher voltage and ofhigh frequency. This is accomplished by the condenser Zn) and the induction coil 0, which are bridged across the interrupter gap and are inserieswith eachother. The condenser andoinductioncoil are contained in the electrode-holding tube while the mag net coil, vibrator and vibrator terminals are contained in the auxiliary tube with a portionof the vibrator spring protruding into theupper joining v tube 6. Itis advantageous to use part of the oining tube for this purpose as it gives the spring ofthe vibrator greater length than would be possible in the ordinary tube. j

. p is ascreW. for regulating the'liniit of the armature swing and pressure between interrupter contacts. I 3 j It Will be obvious that the auxiliary tube forms a very convenient member to grasp with the hands. The fingers can encircle this and be passed through the opening between the two tubes. The joining tubes b, I) also help in aiding the grip as they prevent the hand slipping either up or down as the distance between the two joining tubes 6, b

is just about the width of the ordinary hand. Or the casing may just as well be grasped by the electrode-holding tube.

This makes an instrument which can be made with tubes of fairly small diameter and of very much less length than would be possible if all the apparatus were contained in a single tube; in fact, the entire instrument can be made within such a compass as to be capable of being carried in ones pocket. It makes, therefore, a machine which is much handier from the standpoint of portability than the ordinary box and electrode holder that has found the most general use heretofore. It also can be made much cheaper as it requires no box to house the parts that cannot be carried in the ordinary handle.

Tube is used in the claims to mean a hollow; pipe-like construction whether of circular or non-circular crosssection. Interru-pter is used in the claims to mean broadly any apparatus for interrupting the current to secure a pulsating current. In the apparatus shown the interrupter specifically includes the magnet coil, the vibrator arm and armature and the two vibrator terminals.

That I claim is:

1. A higlrfreqhency electrotherapeutic instrument, having in combination, a casing made up of two tubes in substantial parallelism but spaced apart by one or more joining tubes forming a communication from one of the first-mentioned tubes to the other, an electrode socket supported in one of the first two mentioned tubes, and apparatus located in said first two-mentioned tubes and wholly in the casing for transforming an electric current into a high-frequency and high voltage current and delivering the same to the electrode socket.

2. A high-frequency eleetrotherapeutic instrument, having in combination, a casing comprising an electrode-holding tube and an auxiliary tube connected by one or more joining tubes, the latter entering the first mentioned tube at an angle, a magnet coil and vibrator terminal contained in the auxiliary tube, a vibrator contained partially within a joining tube longitudinally thereof and partially and transversely .within the tube containing the magnet coil .with which it functions, a condenser and induction coil located in the electrode-hold ing tube and electrically connected with each other and the vibrator and vibrator terminal, and an electrode socket in the electrode-holder tube and in electrical connection with the induction coil.

3. A highfrequency electrotherapentic instrument, having in combination, a casing comprising a pair of substantially parallel. tubes spaced apart, a pair of joining tubes connecting the first two mentioned tubes at their two ends, an electrode socket supported in one of the ends of the first-mentioned two tubes, and a condenser, induction. coil, and interrupter located in the first two mentioned tubes and electrically connected with each other and with the electrode socket.

4. In high-frequency electrotherapeutic apparatus, a casing comprising a shell divided into sections, one section forming the entire electrode-holding tube, halt the auxiliary tube and a portion of the inter-eonnecting members while the other section forms half the auxiliary tube and a portion of the interconnecting members, and a cap for the electrode-holding tube.

5. In high-frequency electrotherapeutic apparatus, a casing comprising a shell formed in sections to form an electrodeholding tube, and an auxiliary tube, of which one section forms part of the auxiliary tube and parts of interconnecting tubes between the two longer tubes, and a cap on the electrode-holding tube, while the other section forms the remaining parts of the auxiliary tube and the interconnecting tubes, and a cap for the electrode-holding tube.

6. A high-frequency electrothorapeutic instrument, having in combination, a casing,

comprising a pair of substantially parallel tubes spaced apart, one or more joining tubes connecting the first two mentioned tubes together, an electrode socket contained in one of the first two mentioned tubes, a condenser and induction coil contained in one of the first two mentioned. tubes, a magnet and vibrator terminal contained in the other of the first two mentioned tubes, a vibrator arm fastened in the joining tube and having its free end extending between the magnet and the vibrator terminal, and electrical connections connecting the magnet, vibrator terminal, vibrator arm, condenser, induction coil, and socket.

In testimony whereof I affix my signature.

JAMES H. EASTMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.? 

